Creates a Yar_Client for the RPC service located
at uri.
Parameters
uri
Address of the RPC service. The protocol is derived from the scheme:
http:// and https:// select the
HTTP transport, tcp:// selects the TCP transport,
and unix:// selects the Unix socket transport.
options
An array of client options, keyed by the
YAR_OPT_* constants, equivalent to calling
Yar_Client::setOpt() for each entry. Invalid
options are silently skipped.